EP2813715A1 - Self-locking threaded assembly system - Google Patents

Self-locking threaded assembly system Download PDF

Info

Publication number
EP2813715A1
EP2813715A1 EP14166935.8A EP14166935A EP2813715A1 EP 2813715 A1 EP2813715 A1 EP 2813715A1 EP 14166935 A EP14166935 A EP 14166935A EP 2813715 A1 EP2813715 A1 EP 2813715A1
Authority
EP
European Patent Office
Prior art keywords
screw
thread
degrees
threaded element
assembly system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14166935.8A
Other languages
German (de)
French (fr)
Other versions
EP2813715B1 (en
Inventor
Beat Kaufmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safelock SA
Original Assignee
Safelock SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Safelock SA filed Critical Safelock SA
Priority to EP16186879.9A priority Critical patent/EP3118471A1/en
Publication of EP2813715A1 publication Critical patent/EP2813715A1/en
Application granted granted Critical
Publication of EP2813715B1 publication Critical patent/EP2813715B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/30—Locking exclusively by special shape of the screw-thread

Definitions

  • the present invention relates to a self-locking assembly system of the screw / nut type for precision screws.
  • the present invention relates to an assembly system of two elements, including the assembly of a threaded element with a threaded element such as a conventional screw / nut assembly.
  • the assembly operation consists in applying a tightening torque on the head of a threaded rod, or screw, in order to advance it in a nut by means of a tool.
  • watch movements are frequently used which comprise several screws whose diameter of the threaded rod is less than one millimeter.
  • This type of screw can also be used in the dressing of a watch or other parts such as the bracelet, the clasp, etc.
  • Self-locking screwing systems are known in the prior art, but the required thread profile requires very difficult machining accuracy to obtain in small modules. Therefore, these self-locking assembly systems exist only in large modules, for example modules equal to or greater than 1.5 mm. On the other hand, the known interlocking systems do not make it possible to guarantee a precision assembly with the quality required in the field of watchmaking, in particular by the standards of Swiss watchmaking (NIHS) and the internal standards for watchmakers.
  • NIHS Swiss watchmaking
  • the small module screws are fragile, because of the reduced diameter of their rod. They may therefore deform or even break, especially when a large tightening torque is required to ensure their blocking. For example, it is common for small module screws to break just under the screw head when they are too tight.
  • An object of the present invention is to provide a screw / nut type assembly system better adapted to the particular needs of watchmaking and other areas of micromechanics.
  • Another goal is to propose a self-locking assembly system that does not require glue.
  • Another object of the invention is to propose a self-locking screw / nut assembly which makes it possible to ensure a safe and reliable hold even with screws of short length.
  • Another object of the invention is to propose a self-locking screw / nut assembly in which the strength of the screw is reinforced, particularly in the case of small module screws.
  • An object of the present invention is therefore to prevent the risk of mishandling and the use of lower quality screws in the claimed assembly.
  • a self-locking assembly system comprises a screw having a first thread with a leading edge and a trailing edge, said flanks being asymmetrical, the nominal diameter of the rod being less than 1.5 mm, and a threaded element having a second thread and whose nominal diameter is less than 1.5 mm.
  • the contact surface between the screw and said threaded element consists of a helical ridge.
  • the contact surface is thus reduced to a simple edge.
  • the surface of this edge is very small, close to zero, so that the pressure exerted on this surface by the tensile force of the screw is important which contributes to ensure a reliable hold.
  • the contact between the screw and the threaded member preferably occurs over the entire edge length of the screw portion engaged in the threaded member.
  • This solution therefore has the advantage over the prior art of establishing a continuous contact between the threads of the threaded element and the threaded rod along an edge.
  • this continuous contact makes it possible to distribute the traction forces over the entire length of the thread of the threaded parts in contact and thus to reduce the fatigue of the screw / nut system.
  • the assembly thus comprises a non-standard screw.
  • the reliability of the assembly depends in particular on this screw, and its particular and asymmetrical profile.
  • a conventional screw for example an NIHS compliant screw, preferably can not be screwed into this assembly. This avoids the risk of accidental unscrewing which could occur if a conventional screw, including poor quality screws, could mistakenly be used by the required screw.
  • the screw used in the assembly of the invention therefore comprises a thread with a longitudinal section whose pitch has an asymmetrical profile.
  • Longitudinal section of the threaded element or screw means the section of the threaded element or the screw, in particular the section of the threaded portion of the threaded element or the screw, according to a plane which includes their longitudinal axis.
  • step is meant a segment between two homologous portions of the regular structure constituted by the thread of the screw or that of the threaded element.
  • Profile means the shape of the pattern included in a thread pitch of the threaded rod or that of the threaded element.
  • the assembly system according to the invention has a threaded rod, for example a screw, whose longitudinal section of the thread has an asymmetrical pitch profile.
  • This profile is composed of a leading edge, or leading edge, forming an angle of between -40 and -80 degrees, preferably between -50 degrees and -70 degrees with respect to the longitudinal axis of the screw, and a second flank, asymmetrical to said first flank and forming an angle of between 10 and 50 degrees, preferably between 20 degrees and 40 degrees, relative to the longitudinal axis of the screw.
  • the angle of the leading edge is between -64 and -56 degrees.
  • the threaded element comprises a second thread with a longitudinal section which, for its part, has a symmetrical pitch profile.
  • a pitch profile of the thread of the threaded element is however also possible.
  • the profile of the second thread comprises a front flank and a rear flank intended to come into contact with the rear flank of the screw.
  • the trailing edge forms an angle with the horizontal axis of the screw preferably less than -40 degrees, for example between -40 and -80 degrees, preferably between -50 and -70 degrees.
  • the leading edge forms an angle with the horizontal axis of the screw preferably greater than 40 degrees, for example between 40 and 80 degrees, preferably between 50 and 70 degrees.
  • the front and rear flanks of the threaded element may be symmetrical.
  • a truncated portion joins the leading edge and the trailing edge of the thread of the threaded element.
  • the profile of this net has an edge between this truncated portion and the front flank; this helically shaped edge is intended to become the only line of contact with the screw portion engaged in the threaded element, more specifically with a portion of the rear flank of the thread of this screw
  • This assembly has the advantage of remaining self-locking even if the screw or the threaded element does not have an ideal profile; indeed, a non-ideal machining causes at most a slight displacement of the point of contact between the edge of the threaded element and the rear flank of the thread of the screw, without effect on the safety of the assembly.
  • the machining of screws and threaded elements small modules is thus facilitated, since the accuracy requirements can be reduced without compromising the safety of the assembly.
  • the trailing edge of the thread of the threaded element is almost parallel to the front flank of the thread of the screw.
  • these two flanks are not quite parallel to each other but have an angular difference of less than 10 degrees, preferably less than 5 degrees; this gives more freedom to tapping an unconventional thread in the external threaded portion, and thus to avoid the possibility of introducing a conventional screw into this assembly.
  • the clearance between the trailing edge of the thread of the threaded element and the leading edge of the thread of the screw is preferably less than 50 microns, preferably less than 30 microns, to allow easy screwing to empty, before the screw does not hang but without increasing the pitch more than necessary
  • the screw and the threaded element of the assembly according to the invention are further characterized by a reduced thread pitch.
  • the thread pitch is reduced by at least 15% compared to the standard pitch of an NIHS compliant screw.
  • This reduced step offers two advantages. On the one hand, it makes it possible to increase the length of the thread around a screw of given length, and therefore to increase the torque that it is necessary to exert to unscrew this screw. On the other hand, this reduced pitch makes it possible to reduce the depth of the gap between each turn of the thread of the screw, and therefore to increase the diameter of the screw at the bottom of the thread, thus making it more solid.
  • the particular geometry of the longitudinal section of the screw and the threaded element in particular the asymmetry of the thread of the screw and the choice of the angles of the different flanks, has the advantage of ensuring a continuous contact along the thread of the thread. the opinion.
  • the dimensions of the section of the thread for example the length of the truncated portion of the thread of the threaded element, are of the order of a few micrometers. It may happen for example that this truncated portion is slightly damaged or that its width is different over a certain area.
  • the flank of the threaded element is oriented so that there is always a point of contact throughout the thread of the screw.
  • the helical edge constituting the contact surface between the thread of the screw and that of the threaded element remains continuous despite the defects that may present the thread of the threaded element.
  • the self-locking assembly system comprises a threaded rod, for example a screw, and a threaded element whose respective nominal diameters are between 0.3 and 1.4 mm.
  • the self-locking system makes it possible to perform several operations of loosening and tightening the screw without impairing the locking of the assembly, also called mechanical thread lock.
  • the thread profile of the threaded element obtained by a manufacturing method reduces the level of manufacturing accuracy required. Indeed, during the assembly of a standard threaded rod and the threaded element according to the profile described above, the contact between the rod and the nut is maintained even if the degree of accuracy of manufacture of the threaded rod or the threaded element is not optimal.
  • the threaded rod / threaded element assembly according to the invention thus meets the requirements required by the watchmaking field concerning the holding and tightening of the screws.
  • a method for assembling a self-locking assembly system implements a screwing operation involving a tensile force.
  • This tensile force causes the self-centering of the screw by the contacting the edge of the screw with the flanks of the thread of the threaded element and generates tangential and continuous contact over the entire length of the thread of the screw until it locks. This allows in particular to distribute the traction force along the thread of the screw.
  • the figure 1 illustrates the self-locking assembly of screw-nut type 1 according to the invention.
  • the longitudinal axis AA is common to the screw, or threaded rod, 2 and to the threaded element 4.
  • the Figure 2A illustrates a longitudinal section in a plane comprising the axis AA of a self-locking assembly according to the invention.
  • the Figure 2B illustrates an enlarged detail of the Figure 2A .
  • a threaded element 4 has a thread 5, hereinafter called the "second thread” to distinguish it from the first thread 3 of the screw.
  • This second thread 5 has a longitudinal section along the longitudinal axis AA with an asymmetrical pitch profile.
  • Each pitch P2 of the net 5 comprises a front flank F1 forming an angle between 40 and 80 degrees, preferably between 50 and 70 degrees, for example 56 degrees relative to the longitudinal axis of the threaded element 4.
  • Each pitch P2 of the thread 5 further comprises a rear flank F2, preferably symmetrical with respect to the first flank F1 and forming an angle between -40 and -80 degrees, preferably between - 50 and 70 degrees, for example -56 degrees to the longitudinal axis AA.
  • An edge 6 is formed at the junction between the front flank F1 and the truncated portion T, or at the junction between the leading edge F1 and the rear flank F2 if no truncated portion is provided.
  • the edge 6 represents the contact surface between the truncated portion T of the threaded element and the rear flank f2 of the screw 2.
  • the screw 2 has a first thread 3, the profile of the pitch p1 of the longitudinal section is asymmetrical.
  • the first thread 3 has a leading edge f1 forming an angle between 40 and 80 degrees, preferably between 50 and 70 degrees, for example 60 degrees relative to the longitudinal axis AA of the threaded rod 2.
  • the first thread 3 comprises in addition a rear flank f2, asymmetrical with respect to the front flank f1 and forming an angle between 10 and 50 degrees, preferably between 20 to 40 degrees relative to the longitudinal axis of the screw 2.
  • a truncated portion t can be provided to join the front flank f1 and the rear flank f2.
  • the pitch P2 of the threaded element corresponds to the pitch P1 of the screw; it is chosen to be between 0.06 mm and 0.25 mm depending on the module of the screw.
  • the pitch P2 of the threaded element, and the corresponding pitch P1 of the screw is smaller than the pitch of a standard screw corresponding to the corresponding module NIHS standard.
  • the length of the resulting net is therefore longer. This results in an increased contact area and better retention of the screw in the threaded element.
  • This feature also makes it possible to prevent the accidental screwing of a standard screw into a threaded element according to the invention, which would result in an unreliable assembly.
  • Table 1 below makes it possible to compare the pitch P1, P2 of the screw and of the threaded element of the invention with respect to the standard pitch according to the NIHS standard, for different modules: Module Not a conventional screw according to NIHS standard P1, P2 of a screw according to the invention 0.3 0.08 0.06 0.35 0.09 0.06 0.4 0.1 0.08 0.5 0125 0.1 0.6 0.15 0125 0.7 0175 0.15 0.8 0.2 0.15 0.9 0225 0175 1 0.25 0.2 1.2 0.25 0.2 1.4 0.3 0.25
  • the pitch of a screw according to the invention is reduced by 25% for small modules and 16.66% for 1.4 module screws.
  • the size of the truncated portion T of the threaded element 4 may be between 5 and 20 ⁇ m.
  • the contact between the threads of the screw 2 and the nut 4 consists of a helical ridge 6 all along the threads 3 and 5 of the assembly.
  • the leading edge f1 of the thread 3 of the screw is parallel to, or almost parallel to, the trailing edge of the thread 5 of the threaded element 4, that is to say that they form an angle less than 10 degrees, of preference less than 5 degrees, and have between them a clearance of less than 40 microns, preferably less than 20 microns, so as to allow empty screwing effortlessly.
  • the bottom of the thread 30 of the screw, at the internal junction between flanks f1 and f2, is shallower than for a conventional screw according to the NIHS standard, which makes the screw more solid.
  • This increase in the diameter at the level of the bottom of the net results on the one hand from the reduction of the pitch P1, and on the other hand of an additional effort to raise this net bottom leaving a reduced space between this bottom of the net and the top of the thread 5 of the threaded element 4.
  • the bottom of the net 3 can be rounded; for a given nominal screw diameter, this results in a minimum diameter of the screw at the bottom of the thread which is larger than for a conventional screw according to the NIHS standard, and therefore increased strength.
  • the machining of a rounded bottom is however complex, and a flat bottom, in the form of a truncated portion for example parallel to the longitudinal axis A-A, can also be implemented.
  • the bottom of the second thread 5 may also consist of a truncated portion parallel to the longitudinal axis A-A and raised relative to the thread bottom of a conventional threaded member according to the NIHS standard. In this way, the height of the thread 5 of this element 4 is lower and the threaded element is also reinforced.
  • the truncated portion T of the threaded element 4 makes it possible to keep a sufficient hollow volume between the threaded element 4 and the thread root of the screw 2; this volume makes it possible to compensate for possible deformations of the thread of the threaded rod 2.
  • the truncated portion T thus offers a volume between the nut and the screw in which the material can be deformed during the tightening of the screw, so as to avoid blocking the screw at one point of the assembly.
  • the leading edge F1 of the threaded element is not parallel to the rear flank f2 of the screw 2.
  • the angle between these two flanks f2 and F1 is preferably greater at 10 degrees, preferably between 20 and 40 degrees, for example thirty degrees. If the flanks F1 and f2 were parallel, the contact between the threads 3 and 5 would not be ensured in case the thread of the screw or the nut had to present the least defect.
  • the profile of the net and in particular the orientation of the flanks f2, F1 guarantee the existence of a contact along a line which follows the thread and constitutes a helical ridge 6 throughout the assembly screw / nut.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bolts, Nuts, And Washers (AREA)
  • Surgical Instruments (AREA)

Abstract

Système d'assemblage autobloquant comprenant une vis 2 présentant un premier filet 3, dont le diamètre nominal est inférieur à 1.5 mm, et un élément taraudé 4 présentant un deuxième filet 5 dont le diamètre nominal est inférieur à 1.5 mm et dont la surface de contact lors de l'assemblage entre ladite tige 2 filetée et ledit élément taraudé 4 consiste en une arête hélicoïdale 6.Self-locking assembly system comprising a screw 2 having a first thread 3, whose nominal diameter is less than 1.5 mm, and a threaded element 4 having a second thread 5 whose nominal diameter is less than 1.5 mm and whose contact surface during assembly between said threaded rod 2 and said threaded element 4 consists of a helical ridge 6.

Description

Domaine techniqueTechnical area

La présente invention concerne un système d'assemblage autobloquant du type vis/écrou pour vis de précision.The present invention relates to a self-locking assembly system of the screw / nut type for precision screws.

Etat de la techniqueState of the art

La présente invention concerne un système d'assemblage de deux éléments, notamment l'assemblage d'un élément fileté avec un élément taraudé tel qu'un ensemble vis/écrou usuel. L'opération d'assemblage consiste à appliquer un couple de serrage sur la tête d'une tige filetée, ou vis, afin de la faire progresser dans un écrou au moyen d'un outil.The present invention relates to an assembly system of two elements, including the assembly of a threaded element with a threaded element such as a conventional screw / nut assembly. The assembly operation consists in applying a tightening torque on the head of a threaded rod, or screw, in order to advance it in a nut by means of a tool.

Lors de cette opération de serrage d'un ensemble vis/écrou conventionnel, l'effort de traction, ou de pression, n'est exercé que sur une portion du filet de la vis. La plus grande partie de l'effort de pression est en fait supportée par les deux premières spires du filet, les suivantes n'étant pratiquement pas ou peu sollicitées. Ce phénomène est dû au système normalisé du jeu de tolérances, qui prévoit suffisamment d'espace entre les flancs, afin de garantir l'assemblage des filets intérieurs et extérieurs. Ceci implique qu'après un certain nombre d'opérations de desserrage et de resserrage, les forces de serrage provoquent une déformation ponctuelle du filet. Lors d'un choc ou de vibrations répétées, l'assemblage n'est plus garanti et la vis ou la tige filetée risque de se dévisser.During this tightening operation of a conventional screw / nut assembly, the tensile force, or pressure, is exerted only on a portion of the thread of the screw. Most of the pressure force is in fact supported by the first two turns of the net, the following being practically not or little solicited. This phenomenon is due to the standardized system of tolerances, which provides sufficient space between the flanks, to ensure the assembly of internal and external nets. This implies that after a number of loosening and tightening operations, the clamping forces cause a point deformation of the net. In case of shock or repeated vibrations, the assembly is no longer guaranteed and the screw or the threaded rod may be unscrewed.

En horlogerie, on emploie fréquemment des mouvements de montre qui comportent plusieurs vis dont le diamètre de la tige filetée est inférieur au millimètre. Ce type de vis peut également être utilisé dans l'habillage d'une montre ou d'autres parties telles que le bracelet, le fermoir, etc.In watchmaking, watch movements are frequently used which comprise several screws whose diameter of the threaded rod is less than one millimeter. This type of screw can also be used in the dressing of a watch or other parts such as the bracelet, the clasp, etc.

On souhaite par ailleurs en horlogerie, et dans d'autres domaines, assurer un maintien ferme avec des vis aussi courtes que possibles; le volume à disposition ne permet pas d'employer des vis plus longues. Il est cependant difficile de garantir un couple de maintien suffisant avec des vis très courtes et de très petit module. Par conséquent, les vis horlogères, très courtes, de petit diamètre, et difficiles à usiner avec précision, ont tendance à se dévisser facilement. Le problème est encore exacerbé lorsque les vis subissent des contraintes telles que chocs ou vibrations, qui sont fréquents lors du porter de la montre. Dans ce cas, le maintien de l'assemblage vis-écrou devient difficile, et une opération supplémentaire de collage est alors afin d'éviter le dévissage des vis.It is also desirable in watchmaking, and in other areas, to maintain a firm hold with screws as short as possible; the volume available does not allow to use longer screws. It is however difficult to guarantee a sufficient holding torque with very short screws and very small module. As a result, watchmaking screws, which are very short, small in diameter, and difficult to machine accurately, tend to unscrew easily. The problem is further exacerbated when the screws undergo stresses such as shocks or vibrations, which are common when wearing the watch. In this case, the maintenance of the screw-nut assembly becomes difficult, and an additional bonding operation is then to avoid unscrewing the screws.

Cependant l'ajout de colle dans un mouvement présente des inconvénients majeurs. Premièrement, cette opération est très délicate et nécessite d'être effectuée par un opérateur expérimenté. Ceci engendre un coût et une perte de temps non négligeable dans le montage du mouvement.However the addition of glue in a movement has major disadvantages. First, this operation is very delicate and needs to be performed by an experienced operator. This generates a cost and a significant loss of time in the assembly of the movement.

D'autre part, lors de cette opération de collage, il arrive que des gouttes de colle coulent par inadvertance sur d'autres parties du mouvement. Les conséquences d'un tel incident peuvent être dommageables puisque le mouvement peut être rendu inutilisable.On the other hand, during this gluing operation, it happens that drops of glue inadvertently flow on other parts of the movement. The consequences of such an incident can be harmful since the movement can be rendered unusable.

En outre, si une opération de dévissage s'avère nécessaire, la colle appliquée sur la vis doit être ôtée avant de pouvoir dévisser la vis et l'application de colle doit être répétée lors du remontage.In addition, if a unscrewing operation is necessary, the glue applied to the screw must be removed before the screw can be unscrewed and the glue application must be repeated during reassembly.

Des systèmes de vissage autobloquant sont connus dans l'art antérieur, mais le profil des filets requis nécessite une précision d'usinage très difficile à obtenir dans des petits modules. Par conséquent, ces systèmes d'assemblage autobloquants existent uniquement dans des grands modules, par exemple des modules égaux ou supérieurs à 1.5 mm. En revanche, les systèmes autobloquants connus ne permettent pas de garantir un assemblage de précision avec la qualité requise dans le domaine de l'horlogerie, notamment par les normes de l'horlogerie suisse (NIHS) et les normes internes aux horlogers.Self-locking screwing systems are known in the prior art, but the required thread profile requires very difficult machining accuracy to obtain in small modules. Therefore, these self-locking assembly systems exist only in large modules, for example modules equal to or greater than 1.5 mm. On the other hand, the known interlocking systems do not make it possible to guarantee a precision assembly with the quality required in the field of watchmaking, in particular by the standards of Swiss watchmaking (NIHS) and the internal standards for watchmakers.

Il est particulièrement difficile de réaliser un système auto-bloquant avec des vis courtes, car la surface de contact entre la tige filetée et la pièce taraudée est trop courte.It is particularly difficult to achieve a self-locking system with short screws, because the contact area between the threaded rod and the threaded piece is too short.

Actuellement, on ne connait donc pas de système d'assemblage vis/écrou autobloquant pour une vis de petit diamètre et en particulier de module inférieur à 1.5 mm. Un besoin existe cependant pour des vis autobloquantes de module inférieur à 1.5 mm, en particulier avec des modules compris entre 0.3 et 1.4 mm.Currently, there is therefore no self-locking screw / nut assembly system for a small diameter screw and in particular module less than 1.5 mm. A need exists, however, for self-locking screws with a module smaller than 1.5 mm, in particular with modules between 0.3 and 1.4 mm.

Pour un diamètre de filet inférieur à 1.5 mm, les exigences au niveau des tolérances liées au filetage intérieur et extérieur sont telles que les moyens de production classiques ne permettent pas une réalisation industrielle de cet assemblage autobloquant.For a thread diameter of less than 1.5 mm, the requirements in terms of tolerances related to the internal and external threading are such that the conventional means of production do not allow an industrial realization of this self-locking assembly.

D'autre part, les vis de petit module sont fragiles, en raison du diamètre réduit de leur tige. Elles risquent donc de se déformer ou même de casser, notamment lorsqu'un couple de serrage important est nécessaire pour assurer leur blocage. Il est par exemple fréquent que les vis de petit module cassent juste sous la tête de vis lorsqu'elles sont trop serrées.On the other hand, the small module screws are fragile, because of the reduced diameter of their rod. They may therefore deform or even break, especially when a large tightening torque is required to ensure their blocking. For example, it is common for small module screws to break just under the screw head when they are too tight.

Bref résumé de l'inventionBrief summary of the invention

Un but de la présente invention est de proposer un système d'assemblage de type vis/écrou mieux adapté aux besoins particuliers de l'horlogerie et d'autres domaines de la micromécanique.An object of the present invention is to provide a screw / nut type assembly system better adapted to the particular needs of watchmaking and other areas of micromechanics.

Un autre but est de proposer un système d'assemblage autobloquant qui ne nécessite pas de colle.Another goal is to propose a self-locking assembly system that does not require glue.

Un autre but de l'invention est de proposer un assemblage vis/écrou autobloquant qui permette d'assurer un maintien sûr et fiable même avec des vis de faible longueur.Another object of the invention is to propose a self-locking screw / nut assembly which makes it possible to ensure a safe and reliable hold even with screws of short length.

Un autre but de l'invention est de proposer un assemblage vis/écrou autobloquant dans lequel la solidité de la vis est renforcée, notamment dans le cas de vis de petit module.Another object of the invention is to propose a self-locking screw / nut assembly in which the strength of the screw is reinforced, particularly in the case of small module screws.

Il serait imaginable de réaliser un système d'assemblage autobloquant basé sur une vis de profil standard et un élément taraudé avec un filet de forme particulière. Cependant, la qualité de l'assemblage dépendrait alors également de la précision avec laquelle la vis est usinée. Le risque serait alors qu'une vis de moindre qualité soit employée avec un élément taraudé modifié, résultant en un assemblage de moindre qualité.It would be conceivable to realize a self-locking assembly system based on a standard profile screw and a threaded element with a particular shaped net. However, the quality of the assembly would also depend on the accuracy with which the screw is machined. The risk would be that a lower quality screw is used with a modified threaded element, resulting in a lower quality assembly.

Un but de la présente invention est donc d'empêcher le risque lié à une mauvaise manipulation et à l'emploi de vis de moindre qualité dans l'assemblage revendiqué.An object of the present invention is therefore to prevent the risk of mishandling and the use of lower quality screws in the claimed assembly.

Selon l'invention, ces buts sont atteints notamment au moyen d'un système d'assemblage autobloquant tel que décrit dans la revendication 1.According to the invention, these objects are achieved in particular by means of a self-locking assembly system as described in claim 1.

Un système d'assemblage autobloquant selon l'invention comprend une vis présentant un premier filet avec un flanc avant et un flanc arrière, lesdits flancs étant asymétriques, le diamètre nominal de la tige étant inférieur à 1.5 mm, et un élément taraudé présentant un deuxième filet et dont le diamètre nominal est inférieur à 1.5 mm. Lors de l'assemblage, la surface de contact entre la vis et ledit élément taraudé consiste en une arête hélicoïdale.A self-locking assembly system according to the invention comprises a screw having a first thread with a leading edge and a trailing edge, said flanks being asymmetrical, the nominal diameter of the rod being less than 1.5 mm, and a threaded element having a second thread and whose nominal diameter is less than 1.5 mm. During assembly, the contact surface between the screw and said threaded element consists of a helical ridge.

La surface de contact est ainsi réduite à une simple arête. La surface de cette arête est très faible, proche de nulle, en sorte que la pression exercée sur cette surface par la force de traction de la vis est importante ce qui contribue à assurer un maintien fiable.The contact surface is thus reduced to a simple edge. The surface of this edge is very small, close to zero, so that the pressure exerted on this surface by the tensile force of the screw is important which contributes to ensure a reliable hold.

Il est en outre plus simple de garantir une précision d'usinage optimale sur une simple arête que sur une surface plus importante.It is also easier to guarantee optimum machining accuracy on a single edge than on a larger surface.

Le contact entre la vis et l'élément taraudé se produit de préférence sur toute la longueur d'arête de la portion de vis engagée dans l'élément taraudé. Ainsi, un contact fiable et une pression importante sont obtenus dès les premiers tours de vis dans l'élément taraudé, et pas seulement sur les dernières spires du filet.The contact between the screw and the threaded member preferably occurs over the entire edge length of the screw portion engaged in the threaded member. Thus, reliable contact and significant pressure are obtained from the first turns of the screw in the threaded element, and not only on the last turns of the net.

Cette solution présente donc l'avantage par rapport à l'art antérieur d'établir un contact continu entre les filets de l'élément taraudé et de la tige filetée le long d'une arête. En particulier, ce contact continu permet de répartir les efforts de traction sur la longueur totale du filet des parties filetées en contact et donc de réduire la fatigue du système vis/écrou.This solution therefore has the advantage over the prior art of establishing a continuous contact between the threads of the threaded element and the threaded rod along an edge. In particular, this continuous contact makes it possible to distribute the traction forces over the entire length of the thread of the threaded parts in contact and thus to reduce the fatigue of the screw / nut system.

L'assemblage comporte ainsi une vis non standard. La fiabilité de l'assemblage dépend notamment de cette vis, et de son profil particulier et asymétrique. Une vis conventionnelle, par exemple une vis conforme au standard NIHS, ne peut de préférence pas être vissée dans cet assemblage. On évite ainsi le risque de dévissage accidentel qui pourrait se produire si une vis conventionnelle, y compris de vis de mauvaises qualités, pouvait par erreur être employée à la part de la vis requise.The assembly thus comprises a non-standard screw. The reliability of the assembly depends in particular on this screw, and its particular and asymmetrical profile. A conventional screw, for example an NIHS compliant screw, preferably can not be screwed into this assembly. This avoids the risk of accidental unscrewing which could occur if a conventional screw, including poor quality screws, could mistakenly be used by the required screw.

La vis employée dans l'assemblage de l'invention comporte donc un filet avec une section longitudinale dont le pas présente un profil asymétrique.The screw used in the assembly of the invention therefore comprises a thread with a longitudinal section whose pitch has an asymmetrical profile.

Par « section longitudinale » de l'élément taraudé ou de la vis, on entend la coupe de l'élément taraudé ou de la vis, en particulier la coupe de la partie filetée de l'élément taraudé ou de la vis, selon un plan qui inclut leur axe longitudinal."Longitudinal section" of the threaded element or screw means the section of the threaded element or the screw, in particular the section of the threaded portion of the threaded element or the screw, according to a plane which includes their longitudinal axis.

Par « pas », on entend un segment entre deux portions homologues de la structure régulière que constitue le filet de la vis ou celui de l'élément taraudé.By "step" is meant a segment between two homologous portions of the regular structure constituted by the thread of the screw or that of the threaded element.

Par « profil », on entend la forme du motif compris dans un pas du filet de la tige filetée ou celui de l'élément taraudé."Profile" means the shape of the pattern included in a thread pitch of the threaded rod or that of the threaded element.

Le système d'assemblage selon l'invention présente une tige filetée, par exemple une vis, dont la section longitudinale du filet présente un profil de pas asymétrique. Ce profil est composé d'un flanc avant, ou flanc d'attaque, formant un angle compris entre -40 et -80 degrés, de préférence entre -50 degrés et -70 degrés par rapport à l'axe longitudinal de la vis, et d'un deuxième flanc, asymétrique audit premier flanc et formant un angle compris entre 10 et 50 degrés, de préférence entre 20 degrés et 40 degrés, par rapport à l'axe longitudinal de la vis. De préférence l'angle du flanc avant est compris entre -64 et -56 degrés.The assembly system according to the invention has a threaded rod, for example a screw, whose longitudinal section of the thread has an asymmetrical pitch profile. This profile is composed of a leading edge, or leading edge, forming an angle of between -40 and -80 degrees, preferably between -50 degrees and -70 degrees with respect to the longitudinal axis of the screw, and a second flank, asymmetrical to said first flank and forming an angle of between 10 and 50 degrees, preferably between 20 degrees and 40 degrees, relative to the longitudinal axis of the screw. Preferably the angle of the leading edge is between -64 and -56 degrees.

L'élément taraudé comporte un deuxième filet avec une section longitudinale qui présente quant à elle un profil de pas de préférence symétrique. Un profil de pas du filet de l'élément taraudé est cependant aussi envisageable. Le profil du deuxième filet comporte un flanc avant et un flanc arrière destiné à venir en contact avec le flanc arrière de la vis. Le flanc arrière forme un angle avec l'axe horizontal de la vis de préférence inférieur à -40 degrés, par exemple compris entre -40 et -80 degrés, de préférence entre -50 et -70 degrés. Le flanc avant forme un angle avec l'axe horizontal de la vis de préférence supérieur à 40 degrés, par exemple compris entre 40 et 80 degrés, de préférence entre 50 et 70 degrés. Les flancs avant et arrière de l'élément taraudé peuvent être symétriques.The threaded element comprises a second thread with a longitudinal section which, for its part, has a symmetrical pitch profile. A pitch profile of the thread of the threaded element is however also possible. The profile of the second thread comprises a front flank and a rear flank intended to come into contact with the rear flank of the screw. The trailing edge forms an angle with the horizontal axis of the screw preferably less than -40 degrees, for example between -40 and -80 degrees, preferably between -50 and -70 degrees. The leading edge forms an angle with the horizontal axis of the screw preferably greater than 40 degrees, for example between 40 and 80 degrees, preferably between 50 and 70 degrees. The front and rear flanks of the threaded element may be symmetrical.

Une portion tronquée, de longueur inférieure ou égale à 15 µm, joint le flanc avant et le flanc arrière du filet de l'élément taraudé. Le profil de ce filet présente une arête entre cette portion tronquée et le flanc avant; cette arête de forme hélicoïdale est destinée à devenir la seule ligne de contact avec la portion de vis engagée dans l'élément taraudé, plus précisément avec une portion du flanc arrière du filet de cette visA truncated portion, of length less than or equal to 15 microns, joins the leading edge and the trailing edge of the thread of the threaded element. The profile of this net has an edge between this truncated portion and the front flank; this helically shaped edge is intended to become the only line of contact with the screw portion engaged in the threaded element, more specifically with a portion of the rear flank of the thread of this screw

Cet assemblage présente l'avantage de rester autobloquant même si la vis ou l'élément taraudé n'a pas un profil idéal ; en effet, un usinage non idéal provoque tout au plus un léger déplacement du point de contact entre l'arête de l'élément taraudé et le flanc arrière du filet de la vis, sans effet sur la sûreté de l'assemblage. L'usinage de vis et d'éléments taraudés de petits modules est donc facilité, puisque les exigences de précision peuvent être réduites sans nuire à la sécurité de l'assemblage.This assembly has the advantage of remaining self-locking even if the screw or the threaded element does not have an ideal profile; indeed, a non-ideal machining causes at most a slight displacement of the point of contact between the edge of the threaded element and the rear flank of the thread of the screw, without effect on the safety of the assembly. The machining of screws and threaded elements small modules is thus facilitated, since the accuracy requirements can be reduced without compromising the safety of the assembly.

Dans un système d'assemblage selon l'invention, lors de l'assemblage de ladite tige filetée et dudit élément taraudé, le flanc arrière du filet de l'élément taraudé est presque parallèle au flanc avant du filet de la vis. Dans un mode de réalisation, ces deux flancs ne sont pas tout à fait parallèles entre eux mais présentent un écart angulaire inférieure à 10 degrés, de préférence inférieur à 5 degrés; on dispose ainsi de davantage de liberté pour tarauder un filetage non conventionnel dans la partie taraudée externe, et pour éviter ainsi la possibilité d'introduire une vis conventionnelle dans cet assemblage.In an assembly system according to the invention, during the assembly of said threaded rod and said threaded element, the trailing edge of the thread of the threaded element is almost parallel to the front flank of the thread of the screw. In one embodiment, these two flanks are not quite parallel to each other but have an angular difference of less than 10 degrees, preferably less than 5 degrees; this gives more freedom to tapping an unconventional thread in the external threaded portion, and thus to avoid the possibility of introducing a conventional screw into this assembly.

Lors de l'assemblage de la tige filetée et de l'élément taraudé d'un système d'assemblage autobloquant selon l'invention, il existe un jeu entre les flancs des filets de la vis et de l'élément taraudé. Ce jeu permet notamment un vissage rapide et sans effort jusqu'au blocage de la tige filetée dans l'élément taraudé.When assembling the threaded rod and the threaded element of a self-locking assembly system according to the invention, there is a clearance between the flanks of the threads of the screw and the threaded element. This game allows in particular a quick and effortless screwing until the locking of the threaded rod in the threaded element.

Le jeu présent entre le flanc arrière du filet de l'élément taraudé et le flanc avant du filet de la vis est de préférence inférieur à 50 µm, de préférence inférieure à 30 microns, afin de permettre un vissage facile à vide, avant que la vis ne se bloque mais sans augmenter le pas plus que nécessaireThe clearance between the trailing edge of the thread of the threaded element and the leading edge of the thread of the screw is preferably less than 50 microns, preferably less than 30 microns, to allow easy screwing to empty, before the screw does not hang but without increasing the pitch more than necessary

La vis et l'élément taraudé de l'assemblage selon l'invention se caractérisent en outre par un pas de filetage réduit. Dans un mode de réalisation, pour un module donné, le pas de filetage est réduit d'au moins 15% par rapport au pas standard d'une vis conforme au standard NIHS. Ce pas réduit offre deux avantages. D'une part, il permet d'augmenter la longueur du filet autour d'une vis de longueur donnée, et donc d'augmenter le couple qu'il est nécessaire d'exercer pour dévisser cette vis. D'autre part, ce pas réduit permet de diminuer la profondeur de l'interstice entre chaque spire du filet de la vis, et donc d'augmenter le diamètre de la vis au niveau du fond de filet, la rendant ainsi plus solide.The screw and the threaded element of the assembly according to the invention are further characterized by a reduced thread pitch. In one embodiment, for a given module, the thread pitch is reduced by at least 15% compared to the standard pitch of an NIHS compliant screw. This reduced step offers two advantages. On the one hand, it makes it possible to increase the length of the thread around a screw of given length, and therefore to increase the torque that it is necessary to exert to unscrew this screw. On the other hand, this reduced pitch makes it possible to reduce the depth of the gap between each turn of the thread of the screw, and therefore to increase the diameter of the screw at the bottom of the thread, thus making it more solid.

La géométrie particulière de la section longitudinale de la vis et de l'élément taraudé, notamment l'asymétrie du filet de la vis et le choix des angles des différents flancs, présente l'avantage d'assurer un contact continu le long du filet de la vis. Les dimensions de la section du filet, par exemple la longueur de la portion tronquée du filet de l'élément taraudé, sont de l'ordre de quelques micromètres. Il peut arriver par exemple que cette portion tronquée soit légèrement abîmée ou que sa largeur soit différente sur une certaine zone. Dans ce cas, le flanc de l'élément taraudé est orienté de manière à ce qu'il y ait toujours un point de contact tout au long du filet de la vis. Ainsi l'arête hélicoïdale constituant la surface de contact entre le filet de la vis et celui de l'élément taraudé reste continue malgré les défauts que peut présenter le filet de l'élément taraudé.The particular geometry of the longitudinal section of the screw and the threaded element, in particular the asymmetry of the thread of the screw and the choice of the angles of the different flanks, has the advantage of ensuring a continuous contact along the thread of the thread. the opinion. The dimensions of the section of the thread, for example the length of the truncated portion of the thread of the threaded element, are of the order of a few micrometers. It may happen for example that this truncated portion is slightly damaged or that its width is different over a certain area. In this case, the flank of the threaded element is oriented so that there is always a point of contact throughout the thread of the screw. Thus the helical edge constituting the contact surface between the thread of the screw and that of the threaded element remains continuous despite the defects that may present the thread of the threaded element.

Le système d'assemblage autobloquant selon l'invention comporte une tige filetée, par exemple une vis, et un élément taraudé dont les diamètres nominaux respectifs sont compris entre 0.3 et 1.4 mm.The self-locking assembly system according to the invention comprises a threaded rod, for example a screw, and a threaded element whose respective nominal diameters are between 0.3 and 1.4 mm.

D'autre part, le système autobloquant permet d'effectuer plusieurs opérations de desserrage et de resserrage de la vis sans pour autant altérer le verrouillage de l'assemblage, également nommé frein filet mécanique.On the other hand, the self-locking system makes it possible to perform several operations of loosening and tightening the screw without impairing the locking of the assembly, also called mechanical thread lock.

Dans un assemblage vis/écrou selon l'invention, le profil du filet de l'élément taraudé obtenu par un procédé de fabrication, par exemple de fraisage, permet de réduire le niveau de précision de fabrication requis. En effet lors de l'assemblage d'une tige filetée standard et de l'élément taraudé selon le profil décrit précédemment, le contact entre la tige et l'écrou est maintenu même si le degré de précision de fabrication de la tige filetée ou de l'élément taraudé n'est pas optimal. L'assemblage tige filetée/élément taraudé selon l'invention répond ainsi aux exigences requises par le domaine de l'horlogerie concernant la tenue et le serrage des vis.In a screw / nut assembly according to the invention, the thread profile of the threaded element obtained by a manufacturing method, for example milling, reduces the level of manufacturing accuracy required. Indeed, during the assembly of a standard threaded rod and the threaded element according to the profile described above, the contact between the rod and the nut is maintained even if the degree of accuracy of manufacture of the threaded rod or the threaded element is not optimal. The threaded rod / threaded element assembly according to the invention thus meets the requirements required by the watchmaking field concerning the holding and tightening of the screws.

Un procédé pour assembler un système d'assemblage autobloquant selon l'invention met en oeuvre une opération de vissage impliquant un effort de traction. Cet effort de traction provoque l'auto-centrage de la vis par la mise en contact de l'arête de la vis avec les flancs du filet de l'élément taraudé et engendre un contact tangentiel et continu sur toute la longueur du filet de la vis jusqu'à son blocage. Ceci permet notamment de répartir l'effort de traction le long du filet de la vis.A method for assembling a self-locking assembly system according to the invention implements a screwing operation involving a tensile force. This tensile force causes the self-centering of the screw by the contacting the edge of the screw with the flanks of the thread of the threaded element and generates tangential and continuous contact over the entire length of the thread of the screw until it locks. This allows in particular to distribute the traction force along the thread of the screw.

Brève description des figuresBrief description of the figures

Des exemples de mise en oeuvre de l'invention sont indiqués dans la description illustrée par les figures annexées dans lesquelles :

  • La figure 1 illustre une vue en coupe de l'assemblage selon l'invention.
  • La figure 2A illustre une section longitudinale d'un assemblage autobloquant selon l'invention.
  • La figure 2B illustre un détail des filets de l'assemblage de la figure 2A, la vis étant en position serrée.
Examples of implementation of the invention are indicated in the description illustrated by the appended figures in which:
  • The figure 1 illustrates a sectional view of the assembly according to the invention.
  • The Figure 2A illustrates a longitudinal section of a self-locking assembly according to the invention.
  • The Figure 2B illustrates a detail of the nets of the assembly of the Figure 2A , the screw being in a tight position.

Exemple(s) de mode de réalisation de l'inventionExample (s) of embodiment of the invention

La figure 1 illustre l'assemblage autobloquant de type vis-écrou 1 selon l'invention. L'axe longitudinal A-A est commun à la vis, ou tige filetée, 2 et à l'élément taraudé 4.The figure 1 illustrates the self-locking assembly of screw-nut type 1 according to the invention. The longitudinal axis AA is common to the screw, or threaded rod, 2 and to the threaded element 4.

La figure 2A illustre une section longitudinale dans un plan comprenant l'axe A-A d'un assemblage autobloquant selon l'invention.The Figure 2A illustrates a longitudinal section in a plane comprising the axis AA of a self-locking assembly according to the invention.

La figure 2B illustre un détail agrandi de la figure 2A.The Figure 2B illustrates an enlarged detail of the Figure 2A .

Dans cette première variante, un élément taraudé 4 présente un filet 5, appelé plus loin le « deuxième filet » pour le distinguer du premier filet 3 de la vis. Ce deuxième filet 5 comporte une section longitudinale selon l'axe longitudinal A-A avec un profil de pas asymétrique. Chaque pas P2 du filet 5 comporte un flanc avant F1 formant un angle entre 40 et 80 degrés, de préférence entre 50 et 70 degrés, par exemple de 56 degrés par rapport à l'axe longitudinal de l'élément taraudé 4. Chaque pas P2 du filet 5 comporte en outre un flanc arrière F2, de préférence symétrique par rapport au premier flanc F1 et formant un angle entre -40 et -80 degrés, de préférence entre -50 et s70 degrés, par exemple de -56 degrés par rapport à l'axe longitudinal A-A. Une portion tronquée T sensiblement parallèle à l'axe longitudinal A-A joint les deux flancs F1, F2. Une arête 6 est constituée à la jonction entre le flanc avant F1 et la portion tronquée T, ou à la jonction entre le flanc avant F1 et le flanc arrière F2 si aucune portion tronquée n'est prévue. L'arête 6 représente la surface de contact entre la portion tronquée T de l'élément taraudé et le flanc arrière f2 de la vis 2.In this first variant, a threaded element 4 has a thread 5, hereinafter called the "second thread" to distinguish it from the first thread 3 of the screw. This second thread 5 has a longitudinal section along the longitudinal axis AA with an asymmetrical pitch profile. Each pitch P2 of the net 5 comprises a front flank F1 forming an angle between 40 and 80 degrees, preferably between 50 and 70 degrees, for example 56 degrees relative to the longitudinal axis of the threaded element 4. Each pitch P2 of the thread 5 further comprises a rear flank F2, preferably symmetrical with respect to the first flank F1 and forming an angle between -40 and -80 degrees, preferably between - 50 and 70 degrees, for example -56 degrees to the longitudinal axis AA. A truncated portion T substantially parallel to the longitudinal axis AA joins the two flanks F1, F2. An edge 6 is formed at the junction between the front flank F1 and the truncated portion T, or at the junction between the leading edge F1 and the rear flank F2 if no truncated portion is provided. The edge 6 represents the contact surface between the truncated portion T of the threaded element and the rear flank f2 of the screw 2.

La vis 2 présente un premier filet 3 dont le profil du pas p1 de la section longitudinale est asymétrique. Le premier filet 3 comporte un flanc avant f1 formant un angle entre 40 et 80 degrés, de préférence entre 50 et 70 degrés, par exemple de 60 degrés par rapport à l'axe longitudinal A-A de la tige filetée 2. Le premier filet 3 comporte en outre un flanc arrière f2, asymétrique par rapport au flanc avant f1 et formant un angle entre 10 et 50 degrés, de préférence entre 20 à 40 degrés par rapport à l'axe longitudinal de la vis 2. Une portion tronquée t peut être prévue pour joindre le flanc avant f1 et le flanc arrière f2.The screw 2 has a first thread 3, the profile of the pitch p1 of the longitudinal section is asymmetrical. The first thread 3 has a leading edge f1 forming an angle between 40 and 80 degrees, preferably between 50 and 70 degrees, for example 60 degrees relative to the longitudinal axis AA of the threaded rod 2. The first thread 3 comprises in addition a rear flank f2, asymmetrical with respect to the front flank f1 and forming an angle between 10 and 50 degrees, preferably between 20 to 40 degrees relative to the longitudinal axis of the screw 2. A truncated portion t can be provided to join the front flank f1 and the rear flank f2.

Le pas P2 de l'élément taraudé correspond au pas P1 de la vis; il est choisi pour être compris entre 0.06 mm et 0.25 mm selon le module de la vis.The pitch P2 of the threaded element corresponds to the pitch P1 of the screw; it is chosen to be between 0.06 mm and 0.25 mm depending on the module of the screw.

Avantageusement, le pas P2 de l'élément taraudé, et le pas P1 correspondant de la vis, est plus petit que le pas d'une vis standard conforme à la norme NIHS de module correspondant. Pour une longueur de vis donnée, la longueur du filet résultante est donc plus longue. Il en résulte une surface de contact augmentée et un meilleur maintien de la vis dans l'élément taraudé. Cette caractéristique permet en outre d'empêcher le vissage accidentel d'une vis standard dans un élément taraudé selon l'invention, qui résulterait en un assemblage non fiable.Advantageously, the pitch P2 of the threaded element, and the corresponding pitch P1 of the screw, is smaller than the pitch of a standard screw corresponding to the corresponding module NIHS standard. For a given length of screw, the length of the resulting net is therefore longer. This results in an increased contact area and better retention of the screw in the threaded element. This feature also makes it possible to prevent the accidental screwing of a standard screw into a threaded element according to the invention, which would result in an unreliable assembly.

La table 1 ci-dessous permet de comparer le pas P1, P2 de la vis et de l'élément taraudé de l'invention par rapport au pas standard selon la norme NIHS, pour différents modules : Module Pas d'une vis conventionnelle selon standard NIHS Pas P1, P2 d'une vis selon l'invention 0.3 0.08 0.06 0.35 0.09 0.06 0.4 0.1 0.08 0.5 0.125 0.1 0.6 0.15 0.125 0.7 0.175 0.15 0.8 0.2 0.15 0.9 0.225 0.175 1 0.25 0.2 1.2 0.25 0.2 1.4 0.3 0.25 Table 1 below makes it possible to compare the pitch P1, P2 of the screw and of the threaded element of the invention with respect to the standard pitch according to the NIHS standard, for different modules: Module Not a conventional screw according to NIHS standard P1, P2 of a screw according to the invention 0.3 0.08 0.06 0.35 0.09 0.06 0.4 0.1 0.08 0.5 0125 0.1 0.6 0.15 0125 0.7 0175 0.15 0.8 0.2 0.15 0.9 0225 0175 1 0.25 0.2 1.2 0.25 0.2 1.4 0.3 0.25

On constate que par rapport au pas d'une vis conventionnelle selon le standard NIHS, le pas d'une vis selon l'invention est réduit de 25% pour les petits modules et de 16.66% pour les vis de module 1.4.It is found that compared to the pitch of a conventional screw according to the NIHS standard, the pitch of a screw according to the invention is reduced by 25% for small modules and 16.66% for 1.4 module screws.

La dimension de la portion tronquée T de l'élément taraudé 4 peut être comprise entre 5 et 20 µm.The size of the truncated portion T of the threaded element 4 may be between 5 and 20 μm.

Le contact entre les filets de la vis 2 et de l'écrou 4 consiste en une arête hélicoïdale 6 tout le long des filets 3 et 5 de l'assemblage.The contact between the threads of the screw 2 and the nut 4 consists of a helical ridge 6 all along the threads 3 and 5 of the assembly.

Comme on le voit sur la figure 2, le flanc avant f1 du filet 3 de la vis est parallèle, ou quasi parallèle, au flanc arrière du filet 5 de l'élément taraudé 4, c'est-à-dire qu'ils forment un angle inférieur à 10 degrés, de préférence inférieur à 5 degrés, et présentent entre eux un jeu inférieur à 40 microns, de préférence inférieure à 20 microns, de manière à permettre un vissage à vide sans effort.As we see on the figure 2 the leading edge f1 of the thread 3 of the screw is parallel to, or almost parallel to, the trailing edge of the thread 5 of the threaded element 4, that is to say that they form an angle less than 10 degrees, of preference less than 5 degrees, and have between them a clearance of less than 40 microns, preferably less than 20 microns, so as to allow empty screwing effortlessly.

Le fond du filet 30 de la vis, à la jonction interne entre les flancs f1 et f2, est moins profond que pour une vis conventionnelle selon le standard NIHS, ce qui permet de rendre la vis plus solide. Cette augmentation du diamètre au niveau du fond de filet résulte d'une part de la réduction du pas P1, et d'autre part d'un effort supplémentaire pour rehausser ce fond de filet en laissant un espace réduit entre ce fond de filet et le sommet du filet 5 de l'élément taraudé 4.The bottom of the thread 30 of the screw, at the internal junction between flanks f1 and f2, is shallower than for a conventional screw according to the NIHS standard, which makes the screw more solid. This increase in the diameter at the level of the bottom of the net results on the one hand from the reduction of the pitch P1, and on the other hand of an additional effort to raise this net bottom leaving a reduced space between this bottom of the net and the top of the thread 5 of the threaded element 4.

Le fond du filet 3 peut être arrondi ; pour un diamètre nominal donné de vis, il en résulte un diamètre minimal de la vis au niveau du fond de filet qui est plus important que pour une vis conventionnelle selon le standard NIHS, et donc une solidité accrue. L'usinage d'un fond arrondi est cependant complexe, et un fond plat, sous forme d'une portion tronquée par exemple parallèle à l'axe longitudinal A-A, peut aussi être mis en oeuvre.The bottom of the net 3 can be rounded; for a given nominal screw diameter, this results in a minimum diameter of the screw at the bottom of the thread which is larger than for a conventional screw according to the NIHS standard, and therefore increased strength. The machining of a rounded bottom is however complex, and a flat bottom, in the form of a truncated portion for example parallel to the longitudinal axis A-A, can also be implemented.

Le fond du deuxième filet 5 peut aussi être constitué par une portion tronquée parallèle à l'axe longitudinal A-A et relevée par rapport au fond de filet d'un élément taraudé conventionnel selon le standard NIHS. De cette manière, la hauteur du filet 5 de cet élément 4 est moins élevée et que l'élément taraudé est également renforcé.The bottom of the second thread 5 may also consist of a truncated portion parallel to the longitudinal axis A-A and raised relative to the thread bottom of a conventional threaded member according to the NIHS standard. In this way, the height of the thread 5 of this element 4 is lower and the threaded element is also reinforced.

La portion tronquée T de l'élément taraudé 4 permet de garder un volume creux suffisant entre l'élément taraudé 4 et le fond de filet de la vis 2 ; ce volume permet de compenser d'éventuelles déformations du filet de la tige filetée 2. La portion tronquée T offre ainsi un volume entre l'écrou et la vis dans lequel la matière peut se déformer lors du serrage de la vis, de manière à éviter un blocage de la vis en un seul point de l'assemblage.The truncated portion T of the threaded element 4 makes it possible to keep a sufficient hollow volume between the threaded element 4 and the thread root of the screw 2; this volume makes it possible to compensate for possible deformations of the thread of the threaded rod 2. The truncated portion T thus offers a volume between the nut and the screw in which the material can be deformed during the tightening of the screw, so as to avoid blocking the screw at one point of the assembly.

Le flanc avant F1 de l'élément taraudé est non parallèle au flanc arrière f2 de la vis 2. L'angle entre ces deux flancs f2 et F1 est de préférence supérieur à 10 degrés, de préférence entre 20 et 40 degrés, par exemple de trente degrés. Si les flancs F1 et f2 étaient parallèles, le contact entre les filets 3 et 5 ne serait pas assuré au cas où le filet de la vis ou de l'écrou venait à présenter le moindre défaut. Le profil du filet et notamment l'orientation des flancs f2, F1 garantissent l'existence d'un contact selon une ligne qui suit le filet et constitue une arête hélicoïdale 6 tout au long de l'assemblage vis/écrou.The leading edge F1 of the threaded element is not parallel to the rear flank f2 of the screw 2. The angle between these two flanks f2 and F1 is preferably greater at 10 degrees, preferably between 20 and 40 degrees, for example thirty degrees. If the flanks F1 and f2 were parallel, the contact between the threads 3 and 5 would not be ensured in case the thread of the screw or the nut had to present the least defect. The profile of the net and in particular the orientation of the flanks f2, F1 guarantee the existence of a contact along a line which follows the thread and constitutes a helical ridge 6 throughout the assembly screw / nut.

Numéros de référence employés sur les figuresReference numbers used in the figures

11
Système d'assemblage autobloquantSelf-locking assembly system
22
Tige filetée, par exemple visThreaded rod, for example screws
33
Premier filet de la tige filetée 2First thread of the threaded rod 2
44
Elément taraudéTapped element
55
Deuxième filet de l'élément taraudé 4Second thread of the threaded element 4
66
Point de contact entre les filets 3 et 5Point of contact between nets 3 and 5
f1f1
Flanc avant du filet 3Front flank of the net 3
f2f2
Flanc arrière du filet 3Rear flank of the net 3
tt
Portion tronquée du filet 3Truncated portion of the net 3
F1F1
Flanc avant du filet 5Front flank of the net 5
F2F2
Flanc arrière du filet 5Rear flank of the net 5
TT
Portion tronquée du filet 5Truncated portion of the net 5
3030
Fond du filet 3Bottom of the net 3

Claims (13)

Système d'assemblage autobloquant (1) comprenant : une vis (2) présentant un premier filet (3) avec un flanc avant (f1) et un flanc arrière (f2), lesdits flancs étant asymétriques, le diamètre nominal de la vis étant inférieur à 1.5 mm, et un élément taraudé (4) présentant un deuxième filet (5) et dont le diamètre nominal est inférieur à 1.5 mm, caractérisé en ce que, lors de l'assemblage, la surface de contact entre ladite vis (2) et ledit élément taraudé (4) consiste en une arête hélicoïdale (6). Self-locking assembly system (1) comprising: a screw (2) having a first thread (3) with a leading edge (f1) and a trailing edge (f2), said sidewalls being asymmetrical, the nominal diameter of the screw being less than 1.5 mm, and a threaded element (4) presenting a second thread (5) and whose nominal diameter is less than 1.5 mm, characterized in that , during assembly, the contact surface between said screw (2) and said threaded element (4) consists of a helical ridge (6). Système d'assemblage selon la revendication 1, caractérisé en ce que ledit flanc arrière (f2) de la vis (2) forme avec l'axe longitudinal de ladite vis (2) un angle compris entre 20 degrés et 40 degrés, et en ce que ledit élément taraudé (4) présente un deuxième filet (5) comportant un flanc avant (F1) qui forme avec l'axe longitudinal de ladite vis (2) un angle compris entre 50 degrés et 70 degrés.Assembly system according to claim 1, characterized in that said rear flank (f2) of the screw (2) forms with the longitudinal axis of said screw (2) an angle of between 20 degrees and 40 degrees, and in that that said threaded element (4) has a second thread (5) having a leading edge (F1) which forms with the longitudinal axis of said screw (2) an angle of between 50 degrees and 70 degrees. Système d'assemblage selon l'une des revendications 1 ou 2, caractérisé en ce que ledit deuxième filet (5) présente un flanc avant (F1) et un flanc arrière (F2) symétriques.Assembly system according to one of claims 1 or 2, characterized in that said second thread (5) has a symmetrical front flank (F1) and a rear flank (F2). Système d'assemblage selon l'une des l'une des revendications 1 ou 2, caractérisé en ce que ledit deuxième filet (5) présente un flanc avant (F1), un flanc arrière (F2) et une portion tronquée (T) joignant le flanc avant (F1) du deuxième filet et le flanc arrière (F2) du deuxième filet.Assembly system according to one of claims 1 or 2, characterized in that said second thread (5) has a leading edge (F1), a trailing edge (F2) and a truncated portion (T) joining the leading edge (F1) of the second net and the trailing edge (F2) of the second net. Système d'assemblage selon la revendication 4, caractérisé en ce que ledit flanc avant (F1) du deuxième filet est symétrique par rapport audit flanc arrière (F2) du deuxième filet (5).Assembly system according to claim 4, characterized in that said front flank (F1) of the second thread is symmetrical with respect to said rear flank (F2) of the second thread (5). Système d'assemblage selon la revendication 2, caractérisé en ce que la longueur de ladite portion tronquée (T) dudit deuxième filet (5) de l'élément taraudé (4) est inférieure ou égale à 15 µm.Assembly system according to claim 2, characterized in that the length of said truncated portion (T) of said second thread (5) of the threaded element (4) is less than or equal to 15 microns. Système d'assemblage selon l'une des revendications 3 à 6, caractérisé en ce que ledit flanc arrière (F2) de l'élément taraudé (4) forme avec l'axe longitudinal de ladite vis (2) un angle compris entre -50 degrés et -70 degrés, et en ce que ledit flanc avant (f1) de la vis (2) forme avec l'axe longitudinal de ladite vis (2) un angle compris entre -50 degrés et -70 degrés.Assembly system according to one of claims 3 to 6, characterized in that said rear flank (F2) of the threaded element (4) forms with the longitudinal axis of said screw (2) an angle of between -50. degrees and -70 degrees, and in that said leading edge (f1) of the screw (2) forms with the longitudinal axis of said screw (2) an angle between -50 degrees and -70 degrees. Système d'assemblage selon l'une des revendications 4 à 6, ladite arête étant située à la jonction entre ladite portion tronquée (T) et ledit flanc avant (F1) du deuxième filet (5).Assembly system according to one of claims 4 to 6, said edge being located at the junction between said truncated portion (T) and said leading edge (F1) of the second thread (5). Système d'assemblage selon l'une des revendications 1 à 8, caractérisé en ce que le diamètre nominal dudit premier filet (3) de ladite vis (2) est compris entre 0.3 et 1.4 mm.Assembly system according to one of claims 1 to 8, characterized in that the nominal diameter of said first thread (3) of said screw (2) is between 0.3 and 1.4 mm. Système d'assemblage selon l'une des revendications 1 à 9, caractérisé en ce que le diamètre nominal dudit deuxième filet (5) dudit élément taraudé (4) est compris entre 0.3 et 1.4 mm.Assembly system according to one of claims 1 to 9, characterized in that the nominal diameter of said second thread (5) of said threaded element (4) is between 0.3 and 1.4 mm. Système d'assemblage selon l'une des revendications 1 à 10, dans lequel le pas (P1) de ladite vis (2) est réduit d'au moins 15% par rapport au pas d'une vis de même module conforme à la norme NIHS.Assembly system according to one of claims 1 to 10, wherein the pitch (P1) of said screw (2) is reduced by at least 15% compared to the pitch of a screw of the same module according to the standard NIHS. Vis (2) dont le diamètre nominal est inférieur à 1.5 mm et comprenant un filet (3) caractérisé en ce que ledit filet (3) comporte un premier flanc (f1) formant un angle compris entre -50 degrés et -70 degrés par rapport à l'axe longitudinal de la vis et un deuxième flanc (f2), asymétrique par rapport au premier flanc (f1) et formant un angle compris entre 20 degrés et 40 degrés par rapport à l'axe longitudinal de la vis.Screw (2) whose nominal diameter is less than 1.5 mm and comprising a thread (3) characterized in that said thread (3) comprises a first flank (f1) forming an angle of between -50 degrees and -70 degrees relative to to the longitudinal axis of the screw and a second flank (f2), asymmetrical with respect to the first flank (f1) and forming an angle of between 20 degrees and 40 degrees relative to the longitudinal axis of the screw. Vis selon la revendication 12, dans laquelle le pas (P1) est réduit d'au moins 15% par rapport au pas d'une vis de même module conforme à la norme NIHS.Screw according to claim 12, wherein the pitch (P1) is reduced by at least 15% compared to the pitch of a screw of the same module according to the NIHS standard.
EP14166935.8A 2013-05-14 2014-05-02 Self-locking threaded assembly system Active EP2813715B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16186879.9A EP3118471A1 (en) 2013-05-14 2014-05-02 Self-locking threaded assembly system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00951/13A CH708049A2 (en) 2013-05-14 2013-05-14 System locking threaded joint.

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP16186879.9A Division EP3118471A1 (en) 2013-05-14 2014-05-02 Self-locking threaded assembly system
EP16186879.9A Division-Into EP3118471A1 (en) 2013-05-14 2014-05-02 Self-locking threaded assembly system

Publications (2)

Publication Number Publication Date
EP2813715A1 true EP2813715A1 (en) 2014-12-17
EP2813715B1 EP2813715B1 (en) 2016-10-26

Family

ID=50693470

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16186879.9A Withdrawn EP3118471A1 (en) 2013-05-14 2014-05-02 Self-locking threaded assembly system
EP14166935.8A Active EP2813715B1 (en) 2013-05-14 2014-05-02 Self-locking threaded assembly system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP16186879.9A Withdrawn EP3118471A1 (en) 2013-05-14 2014-05-02 Self-locking threaded assembly system

Country Status (4)

Country Link
EP (2) EP3118471A1 (en)
CH (1) CH708049A2 (en)
ES (1) ES2611468T3 (en)
HK (1) HK1204670A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105443542A (en) * 2015-11-24 2016-03-30 游奕华 Connecting structure for tapered external thread and threaded hole
CN105443549A (en) * 2015-11-24 2016-03-30 游奕华 Conical internal thread and threaded column connecting structure
CN105443546A (en) * 2015-11-24 2016-03-30 游奕华 Tapered thread bolt body and tapered thread nut
EP3184829A1 (en) * 2015-12-21 2017-06-28 Safelock SA Assembly system adjustable by compression
CN109915458A (en) * 2018-04-07 2019-06-21 玉环胜友工具有限公司 Dumbbell shaped taper two-way conical external screw thread left small and right large and conventional threads connection structure
CN110043547A (en) * 2018-04-07 2019-07-23 玉环胜友工具有限公司 The olive-shaped asymmetric double of class is to tapered thread internal screw thread and conventional threads connection structure
WO2019192567A1 (en) * 2018-04-07 2019-10-10 玉环胜友工具有限公司 Connection structure of bolt and nut with dumbbell shape bidirectional conical thread having small left taper and large right taper
CN113985716A (en) * 2020-07-10 2022-01-28 劳力士有限公司 Screw-threaded timepiece component

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT520595B1 (en) * 2017-11-07 2021-07-15 Engel Austria Gmbh Pull or push rod or locking nut for a molding machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5580199A (en) * 1993-06-29 1996-12-03 Kabushiki Kaisha Suzuki Rashi Seisakusho Fastening screw
US5876168A (en) * 1995-10-09 1999-03-02 Iwata Bolt Kabushiki Kaisha Thread forms for preventing disengagement between male and female screwheads

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5580199A (en) * 1993-06-29 1996-12-03 Kabushiki Kaisha Suzuki Rashi Seisakusho Fastening screw
US5876168A (en) * 1995-10-09 1999-03-02 Iwata Bolt Kabushiki Kaisha Thread forms for preventing disengagement between male and female screwheads

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105443542A (en) * 2015-11-24 2016-03-30 游奕华 Connecting structure for tapered external thread and threaded hole
CN105443549A (en) * 2015-11-24 2016-03-30 游奕华 Conical internal thread and threaded column connecting structure
CN105443546A (en) * 2015-11-24 2016-03-30 游奕华 Tapered thread bolt body and tapered thread nut
CN105443542B (en) * 2015-11-24 2018-06-15 游奕华 Conical external screw thread and screw thread hole connection structure
CN105443549B (en) * 2015-11-24 2018-06-15 游奕华 Conical internal thread and threaded post connection structure
CN105443546B (en) * 2015-11-24 2018-06-19 游奕华 The tapered thread body of bolt and tapered thread nut
EP3184829A1 (en) * 2015-12-21 2017-06-28 Safelock SA Assembly system adjustable by compression
CN109989989A (en) * 2018-04-07 2019-07-09 玉环胜友工具有限公司 Olive-shaped taper two-way conical external screw thread left small and right large and conventional threads connection structure
CN109915458A (en) * 2018-04-07 2019-06-21 玉环胜友工具有限公司 Dumbbell shaped taper two-way conical external screw thread left small and right large and conventional threads connection structure
CN110005680A (en) * 2018-04-07 2019-07-12 玉环胜友工具有限公司 Olive-shaped taper two-way conical external screw thread left large and right small and conventional threads connection structure
CN110043547A (en) * 2018-04-07 2019-07-23 玉环胜友工具有限公司 The olive-shaped asymmetric double of class is to tapered thread internal screw thread and conventional threads connection structure
CN110043544A (en) * 2018-04-07 2019-07-23 玉环胜友工具有限公司 Dumbbell shaped taper two-way conical internal thread left small and right large and conventional threads connection structure
WO2019192576A1 (en) * 2018-04-07 2019-10-10 游奕华 Connection structure of internal thread and traditional thread with asymmetrical bidirectional conical thread having dumbbell-like shape
WO2019192554A1 (en) * 2018-04-07 2019-10-10 玉环胜友工具有限公司 Olive-shaped bidirectional tapered external thread and conventional thread connection structure having small left taper and large right taper
WO2019192567A1 (en) * 2018-04-07 2019-10-10 玉环胜友工具有限公司 Connection structure of bolt and nut with dumbbell shape bidirectional conical thread having small left taper and large right taper
CN113985716A (en) * 2020-07-10 2022-01-28 劳力士有限公司 Screw-threaded timepiece component

Also Published As

Publication number Publication date
EP3118471A1 (en) 2017-01-18
HK1204670A1 (en) 2015-11-27
ES2611468T3 (en) 2017-05-09
CH708049A2 (en) 2014-11-14
EP2813715B1 (en) 2016-10-26

Similar Documents

Publication Publication Date Title
EP2813715B1 (en) Self-locking threaded assembly system
EP2780605B2 (en) Self locking threaded fastener system
FR2889727A1 (en) TUBULAR THREAD SEALED WITH LIQUIDS AND GASES
FR2596472A1 (en) LIGHT SCREW-NUT ASSEMBLY UNIT
FR3046137A1 (en) METHOD FOR ALIGNING A FIRST ORIFICE OF A FIRST PART WITH A SECOND ORIFICE OF A SECOND PART AND KIT FOR IMPLEMENTING IT
FR2983544A1 (en) REINFORCED LOCK WASHER
CH705087A2 (en) Timepiece e.g. wristwatch, has tubular adjustment member tightly adjusting distance between bridge and plate and provided with threaded portion screwed into bridge, where member includes wheel located between base of bridge and plate
EP3257393B1 (en) Screw for assembling two timepiece components
FR2849124A1 (en) METALLIC BALL JOINT AND MANUFACTURING METHOD THEREOF
EP3016768B1 (en) System for machining
WO2013140051A1 (en) Method and device for the rigid connection of two thin elements
EP3184829B1 (en) Assembly system adjustable by compression
WO2008129212A2 (en) Mechanical assembly to secure a first part having a bore to a second part having a shaft
EP2795038B1 (en) Tubular component for drilling and operating oil wells and resulting thread joint
EP3936732B1 (en) Threaded timepiece member
EP3569828B1 (en) Overmoulding metal insert for locally reinforcing a moulded part of an aircraft engine
EP0754626A1 (en) Connecting device between a tubular bar and an anchoring element, and its application to an artificial satellite structure
EP2564963A1 (en) Clamping screw with a positive profile
FR2556058A1 (en) Screw with a short thread and a "star"-shaped impression on the thread side, and method for manufacturing it
EP2525735A1 (en) Dentistry instruments including an inseparable assembly of two components, one male and the other female, and corresponding technique for assembling the two male/female components
FR2975741A3 (en) Screw and nut mechanism, has threaded rod comprising helicoid net, where end of threaded rod is provided with axial tapping, and counter-nut comprising threaded axial stud that is engaged with another helicoid net
WO1999037930A1 (en) Hinge for use in micromechanics
CH705083A1 (en) Timepiece, has tubular adjustment member provided with threaded portion screwed with bridge and larger diameter portion located between base of bridge and plate, where large diameter portion is in form of wheel
FR2950117A1 (en) Cannon for use in mechanical piece assembly utilized to assemble bracket sub-assembly and bearing structure, has elastic part deformed radially during compression of tubular parts, to increase outer diameter of elastic part
FR3032246A1 (en) CRIMP NUT AND FIXING ASSEMBLY COMPRISING SUCH NUT

Legal Events

Date Code Title Description
17P Request for examination filed

Effective date: 20140502

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

R17P Request for examination filed (corrected)

Effective date: 20150608

REG Reference to a national code

Ref country code: HK

Ref legal event code: DE

Ref document number: 1204670

Country of ref document: HK

RIC1 Information provided on ipc code assigned before grant

Ipc: F16B 39/30 20060101AFI20160309BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20160415

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

GRAL Information related to payment of fee for publishing/printing deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR3

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

INTC Intention to grant announced (deleted)
INTG Intention to grant announced

Effective date: 20160912

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 840246

Country of ref document: AT

Kind code of ref document: T

Effective date: 20161115

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: P&TS SA, CH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602014004433

Country of ref document: DE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20161026

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 840246

Country of ref document: AT

Kind code of ref document: T

Effective date: 20161026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170127

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170126

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2611468

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20170509

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 4

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170226

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170227

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602014004433

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170126

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170531

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20170727

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

REG Reference to a national code

Ref country code: HK

Ref legal event code: GR

Ref document number: 1204670

Country of ref document: HK

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170502

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20170531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170502

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20140502

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 602014004433

Country of ref document: DE

Representative=s name: BECK & ROESSIG EUROPEAN PATENT ATTORNEYS, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 602014004433

Country of ref document: DE

Representative=s name: BECK & ROESSIG - EUROPEAN PATENT ATTORNEYS, DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161026

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20240521

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240521

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20240602

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20240627

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20240528

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20240524

Year of fee payment: 11